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Mfanya Corshal
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Posted - 2011.05.17 15:45:00 -
[1]
I've noticed an oddity lately ..
I'm currently looking at Quad LiF Fueled I Booster Rockets in Dodixie and it is now the 17th Eve time. The 6 month graph shows, before today, the only sales were in the 573k ISK range in a very tight band. I happen to know for certain that there were some sales at the 499k and 620k level for, at least, the 15th and 16th. Why are these not reflected on that graph? |
Wyke Mossari
Gallente
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Posted - 2011.05.17 17:07:00 -
[2]
That is a common occurrence, the market graphs are pretty screwed up at the moment suffers from many issues.
The filtering of 'outliers' is too aggressive particularly on lower volume items.
Volumes do not reflect real trade volume, I have items that regularly overflow the graphs trade volume figures.
Despite these issues, the graphs are still distorted by outliers because the filter is not timely enough.
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Thoraemond
Minmatar
Far Ranger
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Posted - 2011.05.18 00:28:00 -
[3]
 Originally by: Wyke Mossari
The filtering of 'outliers' is too aggressive particularly on lower volume items. Volumes do not reflect real trade volume, I have items that regularly overflow the graphs trade volume figures.
I was not aware of the problem with volumes. Is the direction of the problem always the same? I.e., is the reported volume number always less-that-or-equal-to the real volume number? Or is the reported volume number sometimes higher than the real number?
Is it possible that the units actually sold but not reported in the volumes figures are for the transactions that are excluded from the high/low/mean price numbers because their prices are "outliers"?
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Wyke Mossari
Gallente
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Posted - 2011.05.18 10:27:00 -
[4]
Originally by: Thoraemond
I was not aware of the problem with volumes. Is the direction of the problem always the same? I.e., is the reported volume number always less-that-or-equal-to the real volume number? Or is the reported volume number sometimes higher than the real number?
I have experienced under-reporting. We have no way to know if there is over reporting, because another trader might be responsible for that volume.
Originally by: Thoraemond
Is it possible that the units actually sold but not reported in the volumes figures are for the transactions that are excluded from the high/low/mean price numbers because their prices are "outliers"?
I think so.
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Caleb Ayrania
Gallente
TarNec
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Posted - 2011.05.19 11:11:00 -
[5]
Screenshots would be helpful with such questions..
There are quite a lot of "flaws" to current ingame graph..
features and exploitation wise..
Hopefully the historics database promised by drE will help this out a lot..
Player tools for filtering etc.. Here is hoping.. :)
Tycoon wannabe go here: SCC Lounge
cocktails and Dreams. |
Wyke Mossari
Gallente
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Posted - 2011.05.19 11:53:00 -
[6]
Originally by: Wyke Mossari
I have experienced under-reporting.
An example one of my regional trade alts sold 4.2 million units of heavy water yesterday and bought 400k units. The reported market volume, several hours after the trade was 2.4 million units.
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Thoraemond
Minmatar
Far Ranger
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Posted - 2011.05.20 00:53:00 -
[7]
Originally by: Wyke Mossari
Originally by: Wyke Mossari
I have experienced under-reporting.
An example one of my regional trade alts sold 4.2 million units of heavy water yesterday and bought 400k units. The reported market volume, several hours after the trade was 2.4 million units.
That's pretty extreme!
I have long been wary of intra-day numbers, and I normally look only at numbers for days that were completed before the last downtime. I.e., at 2011-03-17 10:00 EVE Time, I would only consider numbers up to 2011-03-15 (since the numbers for the latter part of 2011-03-16 have not yet been "fixed" by a downtime).
I am wondering then, if when you write "yesterday", are you describing a period that has been completely processed in a downtime, if you see what I mean?
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